水蒸气参数表.docx

水与水蒸气1kg水从常温转化为100 °C水蒸气需消耗多少度电？水从液态转换为蒸汽，需要的热量为两部分：设常温温度为20°C,压强为一个大气压强，已知水的沸点是100 C,水的相对分子质量为18g/mol ,水的 比热是4.2kj/(kg C )，气化热是40.8kj/mol则：1. 从20 C水变成100度水所需能量=1x ( 100-20 )x 4.2=336 千焦；2. 从100 C水变成100 C水蒸气液体分子要克服分子势能做 功，所需能量=40.8x ( 1000/18 ) =2266.7 千焦合计所需总能量=336+2266.7=2602.7 千焦1度=1000瓦时=3600干焦，2602.7 干焦/3600 干焦=0.723(度),即:将1公斤20度的水转化为100度水蒸气需消耗0.723度电饱和水蒸气的物理参数温度 (C)压强(kgf/cm)重度(kg/cm)热焓(kJ/kg)汽化潜热(kJ/kg)定压热容 (kJ/kgK)导热系数 入(W/mK)导温系数 a x103 (m2/h)粘度M x106 (kgs/m)运动粘度 v x106 (m/s)Pr1001.030.598267022502.1352.466.91.2220.021.081202.021.121272021952.2032.637.81.3111.461.091403.691.966273021402.3122.822.071.386.891.121606.303.258275520782.4783.013.401.464.391.1818010.235.157277420102.7053.38.421.542.931.2520015.867.862279019353.0203.65.371.632.031.3622023.6611.62279218543.4003.93.541.721.451.4724034.1416.76279417683.8804.32.371.811.061.6126047.8723.72279116604.4704.81.631.920.7941.7528065.4633.19277215435.2405.51.142.030.6001.9030087.6146.21275014056.2806.30.7782.150.4612.13320115.1264.72270012388.227.50.5092.330.3532.50340148.9692.762620102512.739.30.2922.570.2723.35360190.42144.0248072123.112.80.1392.970.2025.23370214.68203.0232244056.617.10.0543.440.16611.101 公斤标煤=29307.6kJ/kgce温度(°C)压强(kgf/cn2)热焓(kJ/kg)折标系数(kgce/kg1001.0326700.091101202.0227200.092811403.6927300.093151606.3027550.0940018010.2327740.0946520015.8627900.0952022023.6627920.0952724034.1427940.0953326047.8727910.0952328065.4627720.0945830087.6127500.09383320115.1227000.09213340148.9626200.08940360190.4224800.08462370214.6823220.07923。